1. Midterm Presentation Music Alarm Clock

2. Craig Bilberry Team Leader Electrical Engineering Layout and Design Atomic Clock Signal Will Kalish Electrical Engineering Removable Media Device User Interface Erik LaVine Electrical Engineering Layout and Design MP3 Decoder Eric Womack Electrical Engineering MCU Setup MCU Programming Team Members

3. Overview Introduction  Problem  Solution Constraints  Technical  Practical Design Approach Progress References Questions

4. Problem Restricted option of alarm clock waking mechanism  Beeping  Buzzing  Radio Limited customizable options for people without mp3 players Conventional clocks develop inaccuracies over long periods of time

5. Solution A device that combines the functionality of an atomic clock, alarm clock, and an mp3 docking station without the need of an mp3 player.

6. Technical Constraints NameDescription Audio QualityMusic must be played at a sample rate of 44.1 kHz Audio Compatibility The Music Alarm Clock must be able to play audio files that are widely used in order to be compatible with users existing audio libraries. Storage CapacityThe storage device must be able to store 30 minutes worth of audio files. Time AccuracyThe clock must be able to keep time accurately using the atomic signal. Display Characteristics The display must be readable in all lighting conditions from across the room.

7. Practical Constraints TypeNameDescription SustainabilityDurabilityThe Music Alarm Clock must be able to withstand mistreatment by the user. Health and Safety StandardsThe Music Alarm Clock must meet the UL 826 standard and part 15 of the FCC rules. ManufacturabilitySizeThe Music Alarm Clock should be 8” x 5” x 6” or less. SocialCompatibilityThe removable storage device must be compatible with current operating systems and hardware in PCs. EconomicCostThe projected retail price is $50.

8. Atomic Receiver and Antenna

9. CMMR-8P RC Module Receives Long Wave Analog Signal broadcast by WWVB via a 60mm ferrite antenna Decodes the Long Wave Analog Signal into a digital signal Interfaced with PIC24 microcontroller for interpretation of digital signal [1]

10. CMMR-8P Major Components CME8000 RC Receiver IC by C-MAX 77.5 kHz Crystal Filter 60 kHz Crystal Filter 40 kHz Crystal Filter 60mm Ferrite Antenna

11. CMMR-8P Features & Requirements 3V Power Supply 1024 Hz External Clock Low Power Consumption (<100uA) True Bit Strength Detection High Sensitivity (0.4uV) Data Transfer to CPU (100ms) Power Down Mode

12. CMMR-8P RC Module Layout Crystal Filters Ferrite Antenna CME8000 RC Receiver IC Microcontroller [1]

13. PIC 24

14. PIC24HJ32GP202-I/SP Microcontroller [3] [2] Prototyping (1-25) - $3.51 per chip Mass Production (5000+) - $2.53 per chip Requires Additional Parts

15. Breakout Board for PIC24HJ32 Microcontroller Prototyping (1-10) - $19.95 per board Mass Production (100+) - $15.96 per board Compact Fully Assembled [4]

16. Removable Media Controller

17. Removable Media Cost(2 GB)Advantages Disadvantages USB Flash Drive$10.84 High Availability Module Available ($24.50) SD Card$8.84 Inexpensive Module Available ($17.95) Memory Stick PRO Duo $18.89Expensive No Module 21.5 x 31mm [5][6][7]

18. USB Host Controller Future Technology Devices International, Ltd. VDIP1 Module Uses F.T.D.I.’s VN1CL USB host controller IC Handles entire USB protocol Firmware for easy communication Simple interface with PIC24 [8]

19. USB-PIC Interface VDIP1 PIC24 SCK1 SDO1 PIO MP3 Decoder Chip [8] CS SCLK SDI SDO

20. Audio Decoder

21. VS1011E-L Audio Decoder Decodes mp1, mp2, mp3, and wav audio files Bass, treble, and volume controls Operates with internal or external clock On board high quality stereo DAC Stereo earphone driver on board (up to 30 ohm) Separate operating voltages for analog and digital [9]

22. MP3 Decoder [10]

23. Data Flow Receives input through a serial input bus. Input stream is decoded Passed through a digital volume control and then to the DAC [11]

24. Timeline JanFebMarAprilMay Research →→ Atomic Signal Prototype →→ MP3 Decoder Prototype →→ Removable Media Prototype →→ Programming →→ Testing →→

25. References [1] “Specification for CMMR-8P RC Module,” http://www.c-max-time.com/downloads/index.php. Accessed February 11, 2009 [2] “Photo of Pin Diagram,” February 11, 2009. [Online.] Available: http://ww1.microchip.com/downloads/en/DeviceDoc/70289C.pdf [3] “Photo of PIC24,” February 11, 2009. [Online.] Available: http://www.cippsites.com/Merchant4/graphics/00000003/F452.jpg [4] “Photo of PIC24 Breakout Board,” February 11, 2009. [Online.] Available: http://www.sparkfun.com/commerce/product_info.php?products_id=8787 [5] “Example code from the textbook,” February 10, 2009. [Online.] Available: http://www.ece.msstate.edu/courses/ece3724/main_pic24/docs/textbookexamples.html [6] “Photo of USB drive,” February 10, 2009. [Online.] Available: http://en.wikipedia.org/wiki/USB_flash_drive [7] “Photo of SD card,” February 10, 2009. [Online.] Available: http://en.wikipedia.org/wiki/Secure_Digital_card [8] “Photo of Memory Stick Pro,” February 10, 2009. [Online.] Available: http://en.wikipedia.org/wiki/USB_flash_drive [9] “Breakout Board for VS1011E-L MP3,” http://www.sparkfun.com/commerce/images/products/08820-03-L.jpg. Accessed February 11, 2009 [10] Future Technology Devices International, Ltd., “Vinculum VNC1L Prototyping Module,” VDIP1 datasheet, 2006-2007. [11] “vs1011 Datasheet,” http://www.vlsi.fi/datasheets/vs1011.pdf. Accessed February 9, 2009.

26. Questions?